Denmark–Norway

Denmark–Norway was a 16th-to-19th-century multi-national and multi-lingual real union consisting of the Kingdom of Denmark, the Kingdom of Norway (including the then Norwegian overseas possessions: the Faroe Islands, Iceland, Greenland, and other possessions), the Duchy of Schleswig, and the Duchy of Holstein. The state also claimed sovereignty over three historical peoples: Frisians, Gutes and Wends. Denmark–Norway had several colonies, namely the Danish Gold Coast, Danish India (the Nicobar Islands, Serampore, Tharangambadi), and the Danish West Indies.

The state's inhabitants were mainly Danes, Norwegians and Germans, and also included Faroese, Icelanders and Inuit in the Norwegian overseas possessions, a Sami minority in northern Norway, as well as other indigenous peoples. The main cities of Denmark–Norway were Copenhagen, Christiania (Oslo), Altona, Bergen and Trondheim, and the primary official languages were Danish and German, but Norwegian, Icelandic, Faroese, Sami and Greenlandic were also spoken locally.

In 1380, Olaf II of Denmark inherited the Kingdom of Norway, titled as Olaf IV, after the death of his father Haakon VI of Norway, who was married to Olaf's mother Margaret I. Margaret I was ruler of Norway from her son's death in 1387 until her own death in 1412. Denmark, Norway, and Sweden established and formed the Kalmar Union in 1397. Following Sweden's departure in 1523, the union was effectively dissolved. From 1536/1537, Denmark and Norway formed a personal union that would eventually develop into the 1660 integrated state called Denmark–Norway by modern historians, at the time sometimes referred to as the "Twin Kingdoms". Prior to 1660, Denmark–Norway was de jure a constitutional and elective monarchy in which the King's power was somewhat limited; in that year it became one of the most stringent absolute monarchies in Europe, and was shortly thereafter, in 1665, formalized by an absolutist constitution, the King's Law.

The Dano-Norwegian union lasted until 1814, when the Treaty of Kiel decreed that Norway (except for the Faroe Islands, Iceland, and Greenland) be ceded to Sweden. The treaty however was not recognized by Norway, which resisted the attempt in the 1814 Swedish–Norwegian War. Norway thereafter entered into a much looser personal union with Sweden until 1905, when that union was peacefully dissolved.

The term "Kingdom of Denmark" is sometimes used incorrectly to include both countries in the period, since most of the political and economic power emanated from the city of Copenhagen in Denmark. These term also cover the "royal territories" of the Oldenburgs as it was in 1460, but excluding the "ducal territories" of Schleswig and Holstein. The administration used two official languages, Danish and German, and for several centuries, both a Danish Chancellery (Danish: Danske Kancelli) and German Chancellery (Danish: Tyske Kancelli) existed.

The term "Denmark–Norway" reflects the historical and legal roots of the union. It is adopted from the Oldenburg dynasty's official title. The kings always used the style "King of Denmark and Norway, the Wends and the Goths" (Konge af Danmark og Norge, de Venders og Gothers). Denmark and Norway, sometimes referred to as the "Twin Realms" (Tvillingerigerne) of Denmark–Norway, had separate legal codes and currencies, and mostly separate governing institutions. Following the introduction of absolutism in 1660, the centralisation of government meant a concentration of institutions in Copenhagen. Centralisation was supported in many parts of Norway, where the two-year attempt by Sweden to control Trøndelag had met strong local resistance and resulted in a complete failure for the Swedes and a devastation of the province. This allowed Norway to further secure itself militarily for the future through closer ties with the capital Copenhagen.

Throughout the time of Denmark–Norway, it continuously had possession over various overseas territories. At the earliest times this meant areas in Northern Europe and North America, for instance Estonia and the Norwegian possessions of Greenland, the Faroe Islands and Iceland.^{[citation needed]}

From the 17th century, the kingdoms acquired colonies in Africa, the Caribbean and India. At its height the empire was about 2,655,564.76 km² (1,025,319 sq mi), after the dissolution of the union, in 1814, all the overseas territories became a part of Denmark.